680 CONSERVATIVE ORGANS. [LECT. XI. 



" except a small squilla or shrimp, with a gibbous 

 " back, sometimes met with, which lives there;" 

 but it does not appear that putrefaction goes on 

 in these pitchers, and the constant renewal of 

 the water is, certainly, not favourable to this 

 process. . 



Another pitcher is the tubular leaf of Sarrace- 

 nia, for it can scarcely be termed an appendage, 

 seeing that it does not issue from a leaf, but 

 originates, directly, from the collar (collet) of the 

 plant, which is stemless. In the species before us, 

 S. purpurea, the hollow part of the leaf (see 4, 

 page 491) is an infundibuliform, ventricose cavity, 

 almost tubular below, and having a wide open 

 mouth, bounded in the fore part by a revolute 

 lip, and backwards by a broad dilated margin, 

 auricled on each side, and somewhat resembling 

 the spout of an ewer. In two of the species, 

 however, S.jlava and S. adunca, this expanded 

 part of the lip projects forwards over the mouth 

 of the cavity, and constitutes a kind of lid, al- 

 though not moveable. The lower part of the 

 tube terminates in a thick spongy cord, that ul- 

 timately expands to form the part which attaches 

 it to the plant ; and the remainder of the leaf is a 

 thin expansion, extending along the whole front of 

 the tubular part. Dividing the funnel or pitcher 

 longitudinally, we perceive that its narrower or 

 lower half is devoid of any proper cutis, and lined 



